The San Francisco Giants and the Detroit Tigers were tied for the worst winning percentage in 2017, winning 39.5 percent of the time.

	TEAM	W%	SEASON	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Giants	.395	2017	64	98	162	5,551	639	1,382	290	28	128	612	467	36	1,204	76	34	6,137	2,112	446	31	52	37	136	.249	.309	.380	.689
2	Tigers	.395	2017	64	98	162	5,556	735	1,435	289	35	187	699	503	52	1,313	65	34	6,149	2,355	511	11	27	21	128	.258	.324	.424	.748
3	Phillies	.407	2017	66	96	162	5,535	690	1,382	287	36	174	654	494	47	1,417	59	25	6,133	2,263	497	21	36	25	128	.250	.315	.409	.723
4	White Sox	.414	2017	67	95	162	5,513	706	1,412	256	37	186	670	401	76	1,397	71	31	6,058	2,300	479	35	33	17	124	.256	.314	.417	.731
5	Reds	.420	2017	68	94	162	5,484	753	1,390	249	38	219	715	565	72	1,329	120	39	6,213	2,372	506	50	42	41	116	.253	.329	.433	.761
6	Mets	.432	2017	70	92	162	5,510	735	1,379	286	28	224	713	529	57	1,291	58	23	6,169	2,393	538	36	37	31	118	.250	.320	.434	.755
7	Padres	.438	2017	71	91	162	5,356	604	1,251	227	31	189	576	460	53	1,499	89	33	5,954	2,107	447	52	33	20	99	.234	.299	.393	.692
8	Braves	.444	2017	72	90	162	5,584	732	1,467	289	26	165	706	474	66	1,184	77	31	6,215	2,303	480	59	32	57	137	.263	.326	.412	.738
9	Pirates	.463	2017	75	87	162	5,458	668	1,331	249	36	151	635	519	88	1,213	67	36	6,135	2,105	436	42	28	39	120	.244	.318	.386	.704
10	Orioles	.463	2017	75	87	162	5,650	743	1,469	269	12	232	713	392	50	1,412	32	13	6,139	2,458	513	10	37	12	138	.260	.312	.435	.747
11	Athletics	.463	2017	75	87	162	5,464	739	1,344	305	15	234	708	565	43	1,491	57	22	6,125	2,381	554	13	40	15	129	.246	.319	.436	.755
12	Blue Jays	.469	2017	76	86	162	5,499	693	1,320	269	5	222	661	542	51	1,327	53	24	6,152	2,265	496	25	35	12	153	.240	.312	.412	.724
13	Marlins	.475	2017	77	85	162	5,602	778	1,497	271	31	194	743	486	67	1,282	91	30	6,246	2,412	496	50	41	48	119	.267	.331	.431	.761
14	Rangers	.481	2017	78	84	162	5,430	799	1,326	255	21	237	756	544	81	1,493	113	44	6,121	2,334	513	27	39	18	110	.244	.320	.430	.750
15	Mariners	.481	2017	78	84	162	5,551	750	1,436	281	17	200	714	487	78	1,267	89	35	6,165	2,351	498	14	35	31	131	.259	.325	.424	.749
16	Angels	.494	2017	80	82	162	5,415	710	1,314	251	14	186	678	523	70	1,198	136	44	6,071	2,151	451	17	46	30	141	.243	.315	.397	.712
17	Royals	.494	2017	80	82	162	5,536	702	1,436	260	24	193	660	390	45	1,166	91	31	6,025	2,323	477	17	37	19	160	.259	.311	.420	.731
18	Rays	.494	2017	80	82	162	5,478	694	1,340	226	32	228	671	545	55	1,538	88	34	6,142	2,314	486	16	48	33	115	.245	.317	.422	.739
19	Cardinals	.512	2017	83	79	162	5,470	761	1,402	284	28	196	728	593	65	1,348	81	31	6,219	2,330	508	47	44	36	139	.256	.334	.426	.760
20	Twins	.525	2017	85	77	162	5,557	815	1,444	286	31	206	781	593	46	1,342	95	28	6,261	2,410	523	26	39	26	105	.260	.334	.434	.768
21	Brewers	.531	2017	86	76	162	5,467	732	1,363	267	22	224	695	547	53	1,571	128	41	6,135	2,346	513	42	26	34	116	.249	.322	.429	.751
22	Rockies	.537	2017	87	75	162	5,534	824	1,510	293	38	192	793	519	44	1,408	59	34	6,200	2,455	523	62	41	46	143	.273	.338	.444	.781
23	Yankees	.562	2017	91	71	162	5,594	858	1,463	266	23	241	821	616	64	1,386	90	22	6,348	2,498	530	18	56	22	119	.262	.339	.447	.785
24	Cubs	.568	2017	92	70	162	5,496	822	1,402	274	29	223	785	622	82	1,401	62	31	6,280	2,403	526	48	32	54	134	.255	.338	.437	.775
25	Red Sox	.574	2017	93	69	162	5,669	785	1,461	302	19	168	735	571	53	1,224	106	31	6,338	2,305	489	9	36	48	141	.258	.329	.407	.736